Kyoukai Senjou no Horizon - Volume 7C, Chapter 74: Reducer of Attacks

Xue Xi is forced to fall in love at first sight with this dangerous man on their first meeting. With death being the only other option, she makes the first move:

In the rebirth, in order to prevent the tragedy of the previous life from happening, Bai Yu decided to rush to the [Tower of God] at any cost, and face everything together with his sister!

However, Bai Yu, who was bound by the system, mutated his bloodline, and transformed into a black-scaled python seems to be developing on a completely different path from his previous life…

- Description from novelbuddy

Qin Muling, who was reborn by chance, joined the Yunmeng Heavenly Palace, which was full of beautiful women, and became the closed-door disciple of the supreme leader. He thought he could step onto the pinnacle of life from then on, but little did he know that he would be suppressed by the senior sisters who were both stunning and powerful, to the point where he couldn't even lift his head.He fought hard for his dignity, but was repeatedly defeated and suppressed by the senior sisters without any mercy. He never had a chance to turn the tables, and in the end, he had no choice but to give up: “Senior sisters, I don't want to strive anymore!”The senior sisters smiled and threw out a life-or-death question: “Very well, choose one of us!”Qin Muling: “...”